How to Fix Sign-In Error (-16): Product Was Not Found in Your Account

Product was not found in your account (-16)

This error indicates that you’re signed into an account in our system, but the ON1 app you’re trying to activate isn’t linked to this email. This usually happens for one of these reasons:

• The program hasn’t been purchased under the account you're signing in with.

• You’re attempting to access a version you don’t own (such as ON1 Photo RAW MAX 2025 vs. ON1 Photo RAW 2025).

• The purchase was made using a different email address.

To resolve this, please log in to your account to download the correct product. If you own the app outright, look in the Products tab. If you have a subscription plan, go to the Subscriptions tab.